User manual ARCAM P1000

[. . . ] H A N DBOOK/MANUEL/HANDBUCH / H A N D L E I D I N G / M A N U A L P1000 Arcam P1000 multi-channel power amplifier Amplificateur de puissance P1000 Arcam Mehrkanal-Verstarker Arcam P1000 Arcam P1000 eindversterker Amplificador multi-canal Arcam P1000 English Français Deutsch Nederlands Português Safety guidelines CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION: To reduce the risk of electric shock, do not remove cover (or back). Refer servicing to qualified service personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. The lightning flash with an arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of uninsulated `dangerous voltage' within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. [. . . ] Any amplifier can support bi-wiring, but speakers support it only if separate connection terminals are provided for the two cables (the speaker will have two pairs of terminals on the back, one pair labelled HF or High Frequency, the other pair labelled LF or Low Frequency). Bi-wiring improves the sound of your system because the separation of high and low frequency signal currents into separate speaker cables avoids distortions caused by the different currents interacting with one-another within a single cable, as occurs in conventionally wired systems. Note that some speakers have three pairs of terminals on the back, extending the biwiring principle to tri-wiring. Ensure that your P1000 is switched off and disconnected from the mains supply before attempting to connect speakers. Failure to do this may result in both speaker and amplifier damage. Before you start! < Bi-amping The performance of your system can be enhanced further by extending the signal-separation principle to include separate amplification for the low- and high-frequency drivers in each speaker. You will require two amplifiers to do this. Single wiring The speaker terminals for any given channel are labelled clearly on the rear of the P1000. For each channel, connect the positive terminal of the speaker connection on the P1000 for that channel (coloured red and labelled with `+') to the positive terminal of your speaker for the channel (connect, for example, the positive terminal of the centre channel of the P1000 to the positive channel of your centre speaker). Similarly, connect the negative terminal of the amplifier (coloured black and labelled with `­') to the negative terminal of your speaker. If your speaker supports bi-wiring (i. e. , it has more than one set of connecting terminals), but you do not wish to use bi-wiring, connect the P1000 to the terminals labelled LF or Low Frequency. There should be a strip of metal on the speakers connecting the low-frequency terminals to those for the higherfrequencies; this must not be removed in a single-wired system. Follow the above instructions for each speaker in your system, ensuring that the speakers are connected to the correct output of the P1000. You do not have to connect speakers to all the channels of the P1000 (e. g. , if you don't have a centre speaker, it doesn't matter). P1000 single wiring illustration (just one channel shown, for clarity). Bi-wiring Bi-wiring is performed in the same way as single wiring except that, for each speaker, a pair of cables is used to connect the positive terminal of the amplifier to the speaker. One of the cables must be connected to the lower of the two positive terminals on Alto, with the other cable connected to the higher positive terminal. The negative terminals must be connected in a similar manner. The connecting strip of metal on the speakers connecting the lower terminals to the upper terminals must be removed for bi-wiring. P1000 bi-wiring illustration (just one channel shown, for clarity). P1000 E-7 English Bi-amping Bi-amping requires the use of a second amplifier: one amplifier is used to drive the treble speakers, the other is used for the lower (bass) frequencies. For the cables, bi-amping is much like bi-wiring. Connect the speaker terminals from one module (channel) to one pair of terminals on your speaker. Connect another module, or one channel of a separate power amp. , to the other pair of terminals on the speaker, so that two amplifier channels are connected to that speaker; one for low frequencies and one for high frequencies. The treble (higher) terminals of your speaker should be connected to the speaker terminals of the amplifier module (channel) being used for the high frequencies, while the bass (lower) terminals of your speaker should be connected to the speaker terminals of the amplifier or module (channel) being used for the lower frequencies. The strip of metal on the speakers connecting the lower terminals to the upper terminals must be removed. Failure to do so will result in damage P1000 bi-amping (two amplifier modules to both amplifiers. for a single channel). Notes on making speaker connections < < < Do not make any connections to your amplifier while it is switched on or connected to the mains supply. Always ensure that the volume control on your pre-amplifier is set to minimum before starting to make connections. Before switching your P1000 on for the first time after connecting to speakers, please check all connections thoroughly. [. . . ] If this fault occurs frequently, ensure that the amplifier has adequate ventilation. DC offset faults A "DC offset fault" is not an amplifier fault, but a speaker protection mechanism. If the amplifier is supplied with a DC voltage (rather than the expected AC voltage) for an extended length of time, the coils in the attached speakers will eventually burn out (or, in extreme cases, catch fire). The P1000 can detect this condition, and cut the current to the speakers. DC offset faults can occur intermittently in all set-ups, particularly if a tuner or satellite receiver is connected. [. . . ]